2 * Copyright (c) 2011 Nathan Whitehorn
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/types.h>
30 #include <sys/sysctl.h>
35 static char platform[255] = "";
36 static const char *platform_sysctl = "machdep.bootmethod";
39 default_scheme(void) {
44 is_scheme_bootable(const char *part_type) {
45 size_t platlen = sizeof(platform);
46 if (strlen(platform) == 0)
47 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
49 if (strcmp(part_type, "GPT") == 0)
51 if (strcmp(platform, "BIOS") == 0) {
52 if (strcmp(part_type, "BSD") == 0)
54 if (strcmp(part_type, "MBR") == 0)
62 is_fs_bootable(const char *part_type, const char *fs) {
63 size_t platlen = sizeof(platform);
64 if (strlen(platform) == 0)
65 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
67 if (strcmp(fs, "freebsd-ufs") == 0)
70 if (strcmp(fs, "freebsd-zfs") == 0 && strcmp(platform, "BIOS") == 0)
77 bootpart_size(const char *scheme) {
78 size_t platlen = sizeof(platform);
79 if (strlen(platform) == 0)
80 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
82 /* No partcode except for GPT */
83 if (strcmp(scheme, "GPT") != 0)
86 if (strcmp(platform, "BIOS") == 0)
95 bootpart_type(const char *scheme) {
96 size_t platlen = sizeof(platform);
97 if (strlen(platform) == 0)
98 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
100 if (strcmp(platform, "UEFI") == 0)
103 return ("freebsd-boot");
107 bootcode_path(const char *part_type) {
108 size_t platlen = sizeof(platform);
109 if (strlen(platform) == 0)
110 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
111 if (strcmp(platform, "UEFI") == 0)
114 if (strcmp(part_type, "GPT") == 0)
115 return ("/boot/pmbr");
116 if (strcmp(part_type, "MBR") == 0)
117 return ("/boot/mbr");
118 if (strcmp(part_type, "BSD") == 0)
119 return ("/boot/boot");
125 partcode_path(const char *part_type, const char *fs_type) {
126 size_t platlen = sizeof(platform);
127 if (strlen(platform) == 0)
128 sysctlbyname(platform_sysctl, platform, &platlen, NULL, -1);
130 if (strcmp(part_type, "GPT") == 0) {
131 if (strcmp(platform, "UEFI") == 0)
132 return ("/boot/boot1.efifat");
133 else if (strcmp(fs_type, "zfs") == 0)
134 return ("/boot/gptzfsboot");
136 return ("/boot/gptboot");
139 /* No partcode except for GPT */